Conductance Fluctuations~in the Quantum Hall Regime by Graphene\textit{ pnp} Junctions

ORAL

Abstract

We investigated quantum hall conductance in high quality graphene \textit{pnp} junctions with suspended top gates. In high magnetic fields, in addition to well-developed integer conductance plateaus for the first 5~Landau levels, we also observe prominent conductance fluctuations on transitions between the plateaus as the top gate voltage is varied.~ Latest experimental progress regarding the interpretation of these conductance fluctuations will be discussed.

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Authors

  • Jairo Velasco Jr.

    University of California, Riverside

  • Lei Jing

    Department of Physics and Astronomy, University of California at Riverside, University of California, Riverside

  • Gang Liu

    Department of Physics and Astronomy, University of California at Riverside, University of California, Riverside

  • Wenzhong Bao

    UC Riverside, Department of Physics and Astronomy, University of California at Riverside, University of California, Riverside

  • Philip Kratz

    University of California, Riverside

  • Marc Bockrath

    University of California Riverside, University of California, Riverside

  • Chun Ning Lau

    UC Riverside, Department of Physics and Astronomy, University of California at Riverside, University of California, Riverside